I have always owned chevys but loved the looks of the new dodges so finally bought one. I got a 13 hemi 4x4 qc. My first question is about this catch can I've been reading about, is it really a must and if so are these trucks really that high maintenance? Second question is about performance mods, on all the newer chevys I've owned intake and exhaust mods didn't really give any gains in HP or MPG and handheld tuners didn't do much either. The only real gains were from professional tunes. But all these bolt ones seem pretty popular with the hemi guys.